A would-be robber was shot and killed by an employee at a local cell phone store Monday afternoon. The tense encounter that lasted less than 12 seconds was captured on surveillance video.

Police say the suspect was there to rob the place and he likely didn’t know the only employee inside was armed. Eyewitness News obtained surveillance video of the incident.

“Out of nowhere, I heard about 10 gunshots,” an eyewitness said.

Reports of gunfire came on the initial call. Police rushed to the corner of 70th and Elmwood Streets in Southwest Philadelphia.

“When they arrived on scene, they were met by an employee of MetroPCS,” Philadelphia Police Capt. Scott Drissel said.

It turns out that shooting happened inside the MetroPCS cell phone store.

“The guy that works at MetroPCS run out of the store with a gun in his hand,” said the witness.

Around 4:10 p.m. Monday, a man wearing a hoodie could be seen in surveillance video entering the store with a handgun. He tosses what the store owner says is a bag toward the sole employee, telling him to fill it with phones.